

Q1: Can I use this card's When Digivolving effect to give "isn't affected by your opponent's effects" to 1 of my Digimon and use another Digimon to attack?
Yes, you can.
Q2: What does "isn't affected by ... effects" mean, exactly?
This effect prevents Digimon from being affected by effects. For example, your Digmon won't suspend if it's chosen for a "suspend 1 of your opponent's Digimon" effect, and its DP won't be reduced if it's chosen for a "1 of your opponent's Digimon gets -3000 DP" effect.
Q3: Can a card that has an "isn't affected by ... effects" effect be chosen for an effect?
Yes, it can be chosen.
Q4: Can a card that has an "isn't affected by ... effects" effect be given an effect?
Yes, it can. It won't be affected by it, but it can be given an effect. However, if an effect such as Security Attack is given to a Digimon that isn't affected by effects, the Digimon won't be considered to have that effect.
Q7: A card that has an "isn't affected by ... effects" effect was given an effect that triggers at a timing such as When Attacking. Will the effect trigger if that card later meets the trigger conditions?
If the Digimon isn't affected by effects upon the trigger timing, the effect won't trigger.
Q8: Can I process the part of the effect after "then" in this card's When Digivolving effect even if the "if" condition in the 1st process isn't met?
Yes, you can process it. Even if Jesmon or X Antibody isn't in this card's digivolution cards, this card's When Digivolving effect will allow 1 of your Digimon to attack.
Lv.6 Jesmon (X Antibody) BT20-019 R Mega | Data | Holy Warrior/X Antibody/Royal Knight <Alliance> [When Digivolving] If [Jesmon] or [X Antibody] is in this Digimon's digivolution cards, for the turn, 1 of your Digimon isn't affected by your opponent's effects. Then, 1 of your Digimon may attack. [Your Turn] All of your Digimon with [Sistermon] in their names or the [Royal Knight] trait gain <Piercing> and can also attack your opponent's unsuspended Digimon. --- [Your Turn] While this Digimon is [Jesmon GX], all of your Digimon gain <Piercing> and can also attack your opponent's unsuspended Digimon.
Lv.6 Jesmon (X Antibody) BT20-019 R Mega | Data | Holy Warrior/X Antibody/Royal Knight [Digivolve] [Jesmon]: Cost 1 <Alliance> [When Digivolving] If [Jesmon] or [X Antibody] is in this Digimon's digivolution cards, for the turn, 1 of your Digimon isn't affected by your opponent's effects. Then, 1 of your Digimon may attack. [Your Turn] All of your Digimon with [Sistermon] in their names or the [Royal Knight] trait gain <Piercing> and can also attack your opponent's unsuspended Digimon. --- [Your Turn] While this Digimon is [Jesmon GX], all of your Digimon gain <Piercing> and can also attack your opponent's unsuspended Digimon.
Lv.6 Jesmon (X Antibody) BT20-019 R mega | Data | Holy Warrior/X Antibody/Royal Knight [Digivolve] [Jesmon]: Cost 1 <Alliance> [When Digivolving] If [Jesmon] or [X Antibody] is in this Digimon's digivolution cards, for the turn, 1 of your Digimon isn't affected by your opponent's effects. Then, 1 of your Digimon may attack. [Your Turn] All of your Digimon with [Sistermon] in their names or the [Royal Knight] trait gain <Piercing> and can also attack unsuspended Digimon. --- [Your Turn] While this Digimon is [Jesmon GX], all of your Digimon gain <Piercing> and can also attack unsuspended Digimon.
Lv.6 ジエスモンX抗体 BT20-019 R 究極体 | データ種 | 聖騎士型/X抗体/ロイヤルナイツ ≪連携≫ 【進化時】このデジモンの進化元に「ジエスモン」/「X抗体」があるなら、ターン終了まで、自分のデジモン1体は相手の効果を受けない。その後、自分のデジモン1体でアタックできる。 【自分のターン】名称に「シスタモン」を含むか特徴に「ロイヤルナイツ」を持つ自分のデジモン全ては≪貫通≫を得て、アクティブ状態の相手のデジモンにもアタックできる。 --- 【自分のターン】このデジモンが「ジエスモンGX」の間、自分のデジモン全ては≪貫通≫を得て、アクティブ状態の相手のデジモンにもアタックできる。